Currently it seems I cannot and must instead use: Yes. You would use the Connect feature of Stripe:

For more context: I've started working with stripe express connect. Fill out the about your business on stripes dashboard, they will give you recommendations and how to get started.

Edit: the correct json shows up when you append .txt to the end of the URL. I tried by doing touch apple-app-site-association open apple-app-site-association Then adding the json. Then run firebase deploy Check website, and find the same result as before. Update: I forgot to move the file into the public folder before deploying, after doing so it all works correctly.